大型港机的整机滚装上岸工艺设计

大型港机是港口和船厂使用比较广泛的起重设备,随着业务量的增加,用户要求的提高,整机滚装发运的方式逐渐成为起重机市场上的主流。本文结合某项目配套码头工程一台装船机和两台门座式起重机的滚装上岸作业,对整机滚装方案工艺设计进行了介绍,为类似工程提供参考。     

叠船整机运输与滚装工艺在电厂码头的应用

针对发运码头与用户码头高差过大导致无法选择合适船型进行卸船机整机运输与滚装上岸的难题,选择驳船与半潜船相结合的方式,以“叠船”方案进行卸船机整机滚装上岸。合理确定卸船机运输及上岸船型、现场施工方法及工艺要点等,并对过桥梁进行有限元分析。结果表明,过桥梁的应力和挠度满足使用要求;“叠船”方案实现卸船机整机海上运输及滚装上岸流程的规范化与安全化。     

港口门座起重机整机牵引滚装新工艺

利用门座起重机自身的大车运行机构和牵引绞车配合，进行整机牵引滚装搬运的新工艺具有简单易行，省力，省时，省事等优点，本以为泰国港口运装港口门座起重机为例介绍了这种工艺。     

抓斗卸船机整机采用大型浮吊吊装上岸方案介绍

上海外高桥1600t／h抓斗卸船机在运输过程中,整机采用了大型浮吊吊装上岸的方式,解决了因码头现场条件限制,卸船机无法滚装上岸的问题。介绍了在做方案前需要掌握的码头条件,方案制定中考虑的重点问题,如吊装状态下,整机重心的计算,吊点处的结构强度核算等。该方案获得了成功。     

大型卸船机整机滚装上岸施工技术

文章介绍了越南永新电厂二期2台1250 t/h卸船机,采用整机海运至现场后滚装上岸的方案及方案实施前的准备以及方案制定中考虑的重点,如滚装轨道布设、牵引系统计算、船体调载平衡等。解决了目标码头不具备大型卸船机现场拼装条件以及不具备整机吊装所需的大型起重船的困难。     

岸边集装箱起重机四大件总装吊装工艺方案

针对南京龙潭港集装箱码头受当地航道等因素影响而无法实现岸边集装箱起重机整机总装完成运输至码头后滚装上岸的问题,将其四大件改为码头现场总装。设计了四大件吊装方案,校核了门框整体吊耳的设计强度,优化了发运方案和现场总装方案,确保了该方案的安全性和可实施性。     

浅谈装船机整机吊装在港口设备改造中的应用

SL4装船机是唐山港"京唐港购置翻车机系统设备项目扩容改造工程"的配套设备。在设备安装方案制定时,考虑到国内外装船机、卸船机等大型起重机械的安装一般采用整机滚装上岸的方式,但由于码头岸线已有3条装船线,如采用滚装上岸的方式,需拆除已有3条皮带机各50延米,影响已有3条装船线生产运营2周时间,这对公司生产运营影响较大。经研究采用了整机吊装上岸的方案。吊装方案的成功实施,几乎未对原工程的生产运行造成影响。该方案可为其他码头改造工程提供参考与借鉴。     

苏格兰1000t龙门吊船运技术应用方案

苏格兰龙门吊在设计、制造、验收方面的要求都非常苛刻,本文简述了采用独创的整机分两段发运、船上提升、然后整机滚装上岸的船运及总装方式。     

“世越号”沉船SPMT滚装上岸设计与施工

"世越号"打捞工程举世瞩目,整体打捞重量刷新了世界纪录。上海打捞局凭借先进的管理理念、精干的人力资源、精良的装备和精湛的技术成功完成打捞,赢得了国际社会和韩国政府及民众的赞誉。"世越号"滚装上岸是工程的最后一步。上海打捞局将SPMT方法首次成功应用于沉船的滚装上岸,克服了沉船重量和重心不确定、沉船结构稳定性差和轨道间隙余量小等困难,创造了世界SPMT运输的最新纪录:一次使用最多小车(600轴),运输货物重量最大(17 000吨)。这标志着整个"世越号"打捞工程圆满结束,也证明了使用SPMT滚装方式将沉船转移上岸是一种高效可靠的方式,尤其对重量分布不均匀和重心不确定的大型复杂结构物的运输十分有效,其经验可供类似工程参考。     

四连杆组合臂架门座起重机富余承载能力的参数化研究

介绍四连杆组合臂架门座起重机整机参数化设计方法,作出门座起重机载荷曲线图,对门座起重机的富余承载能力进行研究     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

Catalyzing Coastal Management in Kenya and Zanzibar: Building Capacity and Commitment

Site-based projects were initiated in Chawka Bay-Paje, Zanzibar, and Nyali-Bamburi-Shanzu, Kenya, to demonstrate the benefits of an integrated coastal management (ICM) approach for addressing coastal issues such as tourism development and enhancement of resource-dependent village economies in eastern Africa. A two-year, multidonor project used three primary strategies to make rapid, but sustainable, progress toward ICM. These included using interagency government teams for ICM planning, adopting an internationally recognized framework for ICM as a project ''road map,'' and explicitly incorporating capacity-building strategies into all aspects of the project. Within two years, integrated ICM action strategies, prepared through participatory processes, were being implemented at both sites, and both teams were working to expand the scale and scope of ICM in their nation. More importantly, the project helped create committed, capable, interagency groups that continue to work together to address urgent ICM issues.     

舰艇反鱼雷技术

对目前舰艇反鱼雷技术中的非杀伤、软杀伤和硬杀伤等比较先进的手段进行了阐述,并在此基础上分析研究了舰艇反鱼雷技术的发展趋势。     

Community-Based Management for Sustainable Fisheries Resources in Phang-nga Bay,Thailand

Fishing communities, the Government of Thailand Department of Fisheries, local nongovermnental organizations, universities, the Food and Agriculture Organization of the United Nations (FAO), and FAO's Bay of Bengal Program have undertaken a partnership in management of Phang-nga Bay's coastal resources. It is the first project of its kind in Thailand, and although still in the early stages, offers insights that may contribute to our knowledge of how we can improve our management of coastal resources, including the importance of (1) building relationships within the governance process; (2) combining education, enforcement, and economic incentives to achieve compliance; (3) implementing solutions early; and (4) government support of community-based decisions. These insights reinforce trends emerging in other coastal management projects in the Asian region.     

A simplified method for reliability- and integrity-based design of engineering systems and its application to offshore mooring systems

This paper presents a simplified method for the reliability- and the integrity-based optimal design of engineering systems and its application to offshore mooring systems. The design of structural systems is transitioning from the conventional methods, which are based on factors of safety, to more advanced methods, which require calculation of the failure probability of the designed system for each project. Using factors of safety to account for the uncertainties in the capacity (strength) or demands can lead to systems with different reliabilities. This is because the number and arrangement of components in each system and the correlation of their responses could be different, which could affect the system reliability. The generic factors of safety that are specified at the component level do not account for such differences. Still, using factors of safety, as a measure of system safety, is preferred by many engineers because of the simplicity in their application. The aim of this paper is to provide a simplified method for design of engineering systems that directly involves the system annual failure probability as a measure of system safety, concerning system strength limit state. In this method, using results of conventional deterministic analysis, the optimality factors for an integrity-based optimal design are used instead of generic safety factors to assure the system safety. The optimality factors, which estimate the necessary change in average component capacities, are computed especially for each component and a target system annual probability of system failure using regression models that estimate the effect of short and long term extreme events on structural response. Because in practice, it is convenient to use the return period as a measure to quantify the likelihood of extreme events, the regression model in this paper is a relationship between the component demands and the annual probability density function corresponding to every return period. This method accounts for the uncertainties in the environmental loads and structural capacities, and identifies the target mean capacity of each component for maximizing its integrity and meeting the reliability requirement. In addition, because various failure modes in a structural system can lead to different consequences (including damage costs), a method is introduced to compute optimality factors for designated failure modes. By calculating the probability of system failure, this method can be used for risk-based decision-making that considers the failure costs and consequences. The proposed method can also be used on existing structures to identify the riskiest components as part of inspection and improvement planning. The proposed method is discussed and illustrated considering offshore mooring systems. However, the method is general and applicable also to other engineering systems. In the case study of this paper, the method is first used to quantify the reliability of a mooring system, then this design is revised to meet the DNV recommended annual probability of failure and for maximizing system integrity as well as for a designated failure mode in which the anchor chains are the first components to fail in the system.     

含裂纹钢板复合材料修补强度和刚度数值分析

用ANSYS有限元分析软件对复合材料补片修复含边裂纹和中心裂纹钢板的强度和刚度进行了数值分析.引入相对刚度的概念,研究了钻有止裂孔裂纹的长度对损伤钢板相对刚度的影响,分析了损伤钢板刚度复合材料贴片修补效果;引入屈服载荷提高率的概念,分析了损伤钢板强度的修复效果.     

混凝土道路、堆场面层裂缝的产生与防治

从混凝土道路、堆场的各个结构层分析裂缝产生的原因,并针对性地说明预防措施,阐述裂缝维修方法。     

单相PWM整流器的建模与仿真分析

文章详细分析了单相VSR型PWM整流器的整流原理,建立了电流内环,电压外环的单相VSR型PWM整流控制器的数学模型和逻辑框图。在MATLAB／Simulink软件环境中进行了仿真,分析了模型的可行性。